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Corrugated air electrode for metal air battery

A metal-air battery and air electrode technology, applied in battery electrodes, circuits, electrical components, etc., can solve the problems of poor mechanical properties, affecting the working efficiency of single-cell metal-air batteries, and limited contact reaction area, etc. Accelerates electrochemical reaction and has good mechanical strength

Inactive Publication Date: 2013-08-28
沈阳鑫科能源技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The air electrode inside the existing zinc-air battery is mostly a three-layer flat structure, that is, it is composed of a catalytic layer, a waterproof and breathable layer, and a current collector. This kind of air electrode has a limited contact reaction area during operation and poor mechanical properties, which affects the single-layer structure. Efficiency of energy-saving metal-air batteries

Method used

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  • Corrugated air electrode for metal air battery
  • Corrugated air electrode for metal air battery
  • Corrugated air electrode for metal air battery

Examples

Experimental program
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Effect test

Embodiment

[0024] The flat-plate bipolar plate 2 is made by thermally mixing acetylene black and polyethylene powder with kerosene (150°C), cooling, then pressing out the kerosene, compacting the cake, and pulverizing the powder (20 mesh) , put into the mold and heat press. The corrugated air electrode 1 is formed by hot pressing the same powder as above in a corrugated mold.

[0025] The catalytic layer refers to taking a certain proportion of activated carbon and acetylene black, adding them into distilled water dissolved in catalytic liquid, mixing them into a paste, drying, pyrolysis (500° C.), and cooling. Then pass through an electric sieving machine (80-100 mesh) to become powder. Then add polytetrafluoroethylene emulsion, emulsifier OP and water and mix to make a paste. Finally, put it on a double roller machine with a temperature of 60°C, and roll it to 0.15-0.2mm.

[0026] The diaphragm is a polypropylene microporous membrane. The diaphragm, catalytic layer and corrugated e...

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Abstract

The invention belongs to the technical field of a metal air battery, and particularly relates to a corrugated air electrode for a metal air battery. The corrugated air electrode comprises a corrugated air electrode and a flat bipolar plate, wherein the corrugated air electrode is of a corrugated type, one side of the corrugated air electrode is bonded with the flat bipolar plate, an S-shaped air passage is formed between the corrugated air electrode and the flat bipolar plate, one end of the S-shaped air passage is provided with an air inlet, the other end of the S-shaped air passage is provided with a vent port, and the flat bipolar plate is provided with a liquid inlet and a liquid outlet. By adopting the corrugated air electrode, the power of the battery is increased, the mechanical strength of the air electrode is enhanced, the working service life of the battery is prolonged, and the application field of the metal air battery can be enlarged.

Description

technical field [0001] The invention belongs to the technical field of metal-air batteries, in particular to a corrugated air electrode for metal-air batteries. Background technique [0002] Metal-air batteries have attracted more and more attention from the industry due to their advantages such as high specific energy, stable working voltage, environmental protection, and cheap and easy-to-obtain raw materials. Especially in the context of the global energy crisis and the deteriorating environment, it is of great practical significance to develop electric vehicles using metal-air batteries as energy systems. Metal-air batteries can use zinc, aluminum, magnesium, lithium, etc. as the negative electrode active material, and the oxygen in the air is the positive electrode active material. Chemical reactions produce electricity. [0003] Taking zinc-air batteries as an example, the theoretical voltage of a single cell is about 1.4V. In order to meet the discharge requirements...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/86
CPCY02E60/50
Inventor 曾碚凯霍春辉
Owner 沈阳鑫科能源技术有限公司
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